CVE-2026-58440: Gitea Open Source Git Server

Medium severity, CVSS 6.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content (incomplete revocation cleanup in `DeleteCollaboration`)

Affected products

• Gitea Gitea Open Source Git Server: up to and including 1.26.4

Published 2026-08-13. Last modified 2026-08-26.